eixo da tomada de for\u00e7a do trator<\/strong><\/a> Trata-se de um eixo de transmiss\u00e3o de velocidade constante CAT 6 que conecta o eixo da tomada de for\u00e7a (TDF) do trator \u00e0 entrada principal da caixa de engrenagens da lan\u00e7a da segadora de discos. O projeto da junta homocin\u00e9tica dentro deste eixo \u00e9 fundamental para o desempenho da segadora de discos. Ao contr\u00e1rio de uma junta cardan convencional, que produz uma flutua\u00e7\u00e3o inerente de velocidade de duas vezes por revolu\u00e7\u00e3o quando operada em \u00e2ngulo, a junta homocin\u00e9tica mant\u00e9m uma velocidade angular exatamente uniforme ao longo de toda a sua rota\u00e7\u00e3o, independentemente do \u00e2ngulo de deflex\u00e3o entre a entrada e a sa\u00edda. Isso elimina as cargas de torque pulsantes, a vibra\u00e7\u00e3o e o ru\u00eddo que um eixo padr\u00e3o criaria quando a segadora de discos \u00e9 girada para um lado durante a opera\u00e7\u00e3o de tra\u00e7\u00e3o lateral ou piv\u00f4 central.<\/p>\nAfter the main PTO drive shaft delivers power to the tongue gearbox, the gearbox splits and redirects the rotational force toward the cutterbar drive train. On swivel-hitch models such as the H7230, H7330, H7460, and H7560, a dedicated swivel gearbox is integrated into the tongue assembly to maintain the PTO shaft angle straight through turns of more than 90 degrees. This gearbox is critical because it allows the operator to execute extremely tight headland turns and cut around field obstacles without ever needing to stop and realign the machine. Power exits the tongue gearbox via an intermediate PTO driveline shaft and enters the main cutterbar drive gearbox on the frame of the implement.<\/p>\n
For the H7230, H7330, H7460, and H7560 models, one or more intermediate PTO shaft assemblies bridge the tongue gearbox to the cutterbar gearbox, often including a 55N square-profile shaft with an integrated clutch for the larger 100 HP models. The secondary disc mower PTO shaft then distributes power laterally through the MowMax cutterbar system, driving the series of individual sealed disc gearboxes mounted along the cutterbar frame. Each disc gearbox multiplies the input shaft RPM to drive the cutting discs at approximately 3,000 RPM, generating the high blade tip speed necessary for a clean, high-quality cut through dense forage crops. For the secondary shaft position on most Discbine models, CMN Transmission recommends a Category 5 Double CV configuration with the FNT34 combination clutch, ensuring smooth power delivery to the cutterbar and reliable overload protection for the gearbox chain.<\/p>\n
O conjunto da embreagem FNT34 no eixo da tomada de for\u00e7a (TDF) da embreagem deslizante secund\u00e1ria executa duas fun\u00e7\u00f5es de prote\u00e7\u00e3o distintas, por\u00e9m complementares, simultaneamente. O elemento de disco de fric\u00e7\u00e3o proporciona um limite de deslizamento de torque calibrado: quando a barra de corte encontra um bloqueio repentino, impacto com pedra ou objeto estranho que produz um pico de torque que excede o limite definido da embreagem, as pastilhas de fric\u00e7\u00e3o deslizam instantaneamente para absorver a energia do impacto antes que ela se propague pela junta universal do eixo da TDF, garfo e componentes internos da caixa de engrenagens. Este \u00e9 o mecanismo que protege os componentes mais caros de falhas catastr\u00f3ficas.<\/p>\n
![\"Eixo](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-New-Holland-Disc-Mower-24.webp\")
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Aplica\u00e7\u00f5es do eixo da tomada de for\u00e7a (TDF) da segadora de discos<\/h2>\n
1. Hay Harvesting<\/strong>
\nThe primary application for the New Holland Discbine series. The disc mower cuts grasses and legumes into windrows while the integrated conditioning rolls crimp and crack the stems to accelerate field drying before baling. A reliable PTO shaft for discbine is the critical link that transfers tractor power to the cutterbar at the consistent RPM required for a clean, high-quality cut across varied crop densities and field conditions. Any interruption in PTO shaft performance during the narrow harvest weather window directly reduces hay quality and profitability.<\/p>\n2. Forage Harvesting<\/strong>
\nMowing high-value crops such as alfalfa, clover, and ryegrass at the right stage of maturity requires the cutterbar to run at precise, consistent speed throughout the entire swath. The 1000 PTO shaft configuration used on the larger Discbine models delivers the RPM stability needed to maximize nutritional content and minimize leaf loss at the point of cutting, whether the crop is destined for dry hay storage or green chop for direct feeding. An accurately calibrated slip clutch on the PTO drive shafts assembly protects the gearbox investment without compromising cut quality.<\/p>\n3. Silage Production<\/strong>
\nCutting crops at higher moisture levels for fermented silage storage in bunkers, pits, or wrapped bales demands fast, even cutting across the full width of the machine to ensure uniform fermentation. The 540 PTO shaft and 1000 rpm PTO shaft options across the Discbine range allow operators to match PTO speed to tractor output and silage crop type. Reliable PTO shaft parts are especially critical in silage operations because any shaft failure mid-cut results in uneven moisture in the wilted crop, which compromises fermentation quality and silage dry matter losses.<\/p>\n4. Manejo de Pastagens<\/strong>
\nTopping and trimming pastures to control rank or stemmy growth, remove weeds, and encourage fresh and palatable re-growth for grazing animals places heavy intermittent demands on the discbine drivetrain. The combination of dense root crowns, embedded wire, stones, and sudden terrain changes makes the overrunning clutch function of the FNT34 shear bolt PTO shaft alternative especially valuable in pasture environments. A robust PTO shaft tractor interface with proper CV joint articulation ensures the machine tracks ground contours without generating destructive torque spikes during the frequent direction changes typical of irregular paddock shapes.<\/p>\n5. Cover Crop Termination<\/strong>
\nCutting down winter cover crops such as cereal rye or vetch ahead of the planting season, leaving the biomass as a protective mulch layer to suppress weeds and protect soil structure. Cover crop termination often involves mowing at high forward speeds through dense, lodged crop stands that test the torque capacity of every component in the PTO driveline shaft system. Choosing the correct PTO shaft sizes and category rating for the tractor HP being used avoids overloading the drivetrain and ensures that the cut biomass is distributed uniformly across the full cutting width for effective mulch coverage.<\/p>\n6. Corte de grama em beira de estrada e servi\u00e7os especializados<\/strong>
\nMaintaining roadsides, drainage ditches, airport buffer strips, and conservation headlands where a clean, controlled cut is needed in irregular or sensitive areas. In these applications, the center-pivot and swivel-hitch Discbine models depend entirely on the CAT 6 CV tractor PTO shafts to maintain smooth power delivery through the extreme articulation angles needed to position the cutterbar precisely along sloped banks, ditches, and corners. The PTO shaft guard and enclosed drivetrain design are also especially important in public roadside work where bystander safety standards apply.<\/p>\n![\"Eixo](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-New-Holland-Disc-Mower-21.webp\")
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How to Install PTO Shaft on New Holland Discbine<\/h2>\n
1. Safety Preparation: Disengage PTO and Chock Wheels
\nBefore beginning any PTO shaft installation or removal procedure, shut off the tractor engine completely and allow all rotating components to come to a full stop. Apply the tractor parking brake firmly and chock the rear wheels to prevent any movement. Disconnect the spark plug lead on older tractors or turn the key fully to the off position on modern models. Never attempt to install or remove a PTO driveline shaft while any components are still turning, even at very low speed. Confirm that no residual hydraulic pressure remains in the discbine lift circuit that could cause the header to drop unexpectedly during the procedure.<\/p>\n
2. Measure and Confirm PTO Shaft Length Before Fitting
\nBefore sliding the new PTO shaft tube onto the tractor and implement stubs, measure the distance between the two yoke connection points with the discbine hitched to the tractor at normal operating height. The shaft should overlap by at least 1\/3 of its telescoping travel when fully compressed, and the two yoke halves should not contact each other or hit the shaft tube ends when the machine is at full articulation angle. A PTO shaft length that is too short risks disengaging the telescoping tubes under extreme articulation, while an excessively long shaft risks bottoming out and bending or cracking the PTO shaft tubing when the machine moves over ground undulations.<\/p>\n
3. Slide and Lock the Tractor-Side Yoke onto the PTO Stub
\nAlign the PTO shaft yoke spline with the tractor PTO output stub, ensuring that the correct spline profile is matched (1.375-21 or 1.750-20 as applicable to your Discbine model). Push the yoke firmly onto the stub until the spring-loaded locking collar clicks into the groove and the yoke is fully seated with no axial play. Tug the yoke firmly to confirm it is locked. Never start the tractor with an unlocked yoke. On models where a PTO shaft adapter is used to bridge a difference between tractor and implement spline sizes, confirm the adapter is correctly torqued to specification before fitting the main driveline shaft.<\/p>\n
4. Connect the Implement-Side Yoke to the Discbine Input
\nConnect the implement-side yoke to the discbine tongue gearbox input shaft using the same locking collar procedure used on the tractor side. On Discbine models using a combination clutch, ensure the clutch body faces the correct direction as marked on the FNT34 housing (the overrunning clutch must be oriented toward the implement side, not the tractor side). Check that the PTO shaft cover chain anchor points are correctly attached to both the tractor drawbar bracket and the implement frame to prevent the guard tube from rotating with the shaft. A loose or unanchored PTO shaft guard is a serious safety hazard and may cause the guard to wrap around the shaft during operation.<\/p>\n
5. Lubrication, Trial Run, and Final Checks
\nApply lithium-complex grease to all PTO shaft u joint cross-kit grease nipples until fresh grease appears at the needle roller bearing seals on all four trunnion ends. Also grease the telescoping inner and outer shaft profile tubes to prevent fretting corrosion and ensure smooth length adjustment under load. Start the tractor and engage the PTO at low throttle first, listening and observing for any unusual vibration, noise, or misalignment before bringing the machine up to full working RPM. After the first hour of operation, re-torque any visible bolt connections on the clutch and yoke assemblies, and re-check the guard chain anchor points for security. This initial inspection interval is standard practice after fitting any new agricultural PTO shaft assembly.<\/p>\n
![\"Eixo](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-New-Holland-Disc-Mower-26.webp\")
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How to Choose the Right PTO Shaft for Disc Mower<\/h2>\n
1. Confirm Your Exact Discbine Model Number<\/strong>
\nThe model number (H7220, H7230, H7320, H7330, H7450, H7460, H7550, or H7560) determines not only the PTO shaft category and PTO shaft dimensions required, but also whether your machine uses one, two, or three shaft positions in the drivetrain. The shaft requirements for a 65 HP H7220 are fundamentally different from those of a 100 HP H7460, and ordering the wrong category will result in a shaft that either does not physically fit or is under-rated for the torque load it must transmit. Always locate the model plate on the tongue frame before placing an order, and note the production year if possible for variant identification.<\/p>\n2. Identify Your Tractor PTO Speed: 540 or 1000 RPM<\/strong>
\nThe H7220 and H7320 are 540 RPM only, requiring a standard 540 PTO shaft configuration. The H7450, H7460, H7550, and H7560 require a 1000 PTO shaft. The H7230 and H7330 can run on either 540 or 1000 RPM, so the shaft must be selected to match the tractor PTO output speed in actual field use. Running a discbine on the wrong PTO speed will either dramatically overspeed the cutterbar discs (creating a dangerous blade failure risk at 1000 RPM on a 540-designed machine) or underspeed them (producing a poor quality cut with excessive crop plugging). Verify the tractor PTO speed selector position before finalizing the shaft specification.<\/p>\n3. Verify Tractor Spline Size and Hitch Height<\/strong>
\nThe CAT 6 CV main shaft is available with either a 1.375-21 spline (6-spline, common on 65-80 HP tractors) or a 1.750-20 spline (21-spline, used on 90-100+ HP tractors). Measure the PTO stub diameter precisely if you are unsure, or refer to the tractor operator manual for the specified PTO output shaft profile. Additionally, the distance between the tractor drawbar pin and the tractor PTO centerline affects the effective shaft angle at working height. If this distance is non-standard due to a modified hitch bracket or an unusual tractor-implement combination, our engineering team can calculate the correct PTO shaft length and provide a custom configuration to suit the exact geometry.<\/p>\n4. Choose Clutch Type Based on Operating Conditions<\/strong>
\nFor most Discbine applications, the FNT34 combination clutch on the secondary slip clutch PTO shaft position is the preferred choice, offering both friction slip protection and overrunning capability in one compact assembly. However, in some very rocky or obstructed fields where extreme impact loads are frequent, a shear bolt PTO shaft or PTO shaft shear bolt design may be preferred because the shear bolt provides an absolutely definite, positive torque limit and is quickly replaceable in the field with a standard hardware item. Our CMN Transmission technical team can advise on the appropriate clutch selection for your specific field conditions, crop type, and typical obstacle frequency to ensure the right level of drivetrain protection is specified from the start.<\/p>\n![\"Eixo](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-New-Holland-Disc-Mower-20.webp\")
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Common PTO Driveline Shaft Troubleshooting<\/h2>\n
1. Vibra\u00e7\u00e3o excessiva durante a opera\u00e7\u00e3o
\nVibration in the PTO drive shaft during mowing is most commonly caused by worn or damaged PTO shaft universal joint cross-kits, a bent or kinked PTO shaft tube, misaligned yoke phasing (the two yokes must be in the same plane, not 90 degrees offset), or a shaft running at an excessive operating angle for its category rating. Inspect the cross-kit needle rollers for wear or seizure by checking for any play or rough rotation at each trunnion journal. Replace the cross-kit assembly immediately if any roughness or looseness is felt, as a failed U-joint can disintegrate under load and cause significant secondary damage to the machine and a serious safety hazard for the operator.<\/p>\n
2. Clutch Slipping Under Normal Load
\nSe a embreagem de fric\u00e7\u00e3o FNT34 no eixo da tomada de for\u00e7a (TDF) estiver patinando durante a opera\u00e7\u00e3o normal no campo, sem qualquer sobrecarga aparente, as causas mais prov\u00e1veis \u200b\u200bs\u00e3o o desgaste do revestimento do disco de fric\u00e7\u00e3o, a contamina\u00e7\u00e3o das superf\u00edcies de fric\u00e7\u00e3o com graxa ou \u00f3leo, ou a pr\u00e9-carga incorreta da mola ap\u00f3s uma manuten\u00e7\u00e3o anterior. N\u00e3o tente aumentar a pr\u00e9-carga da mola da embreagem al\u00e9m da especifica\u00e7\u00e3o do fabricante como solu\u00e7\u00e3o tempor\u00e1ria, pois isso anular\u00e1 a fun\u00e7\u00e3o de prote\u00e7\u00e3o contra sobrecarga e poder\u00e1 danificar a caixa de engrenagens em caso de impacto com pedras. Em vez disso, desmonte a embreagem, inspecione o estado do disco de fric\u00e7\u00e3o, limpe cuidadosamente todas as superf\u00edcies de contato, substitua quaisquer componentes desgastados e ajuste a pr\u00e9-carga da mola para o valor de torque especificado antes de retornar as pe\u00e7as do eixo da TDF ao servi\u00e7o.<\/p>\n
3. Telescoping Tube Seizing or Difficult to Extend
\nIf the inner and outer PTO shaft tubing profiles are binding or seizing when the machine is hitched at an angle, the root cause is almost always lack of lubrication on the sliding profile surfaces, combined with the abrasive fretting wear that accumulates when the tubes are operated dry for extended periods. Clean the inner and outer profile sections with a clean rag, apply a generous coat of lithium-based grease, and cycle the shaft through its full extension range several times to distribute the grease evenly. For severely corroded profiles, a light application of penetrating oil followed by careful clean-up and fresh grease may be needed. Regularly greasing the PTO shaft tube sliding interface at the same service interval as the cross-kits prevents this issue from recurring.<\/p>\n
4. Noisy Operation or Clicking from PTO Shaft Area
\nClicking, knocking, or rhythmic noise from the tractor PTO shaft area during operation typically indicates a failing cross-kit needle roller bearing, loose or damaged PTO shaft yoke locking collar, or a worn overrunning ratchet mechanism inside the FNT34 combination clutch. Locate the source of the noise carefully by running the discbine at low speed on flat ground with the cutterbar raised, observing the shaft from a safe distance while listening for the click cycle frequency. A click that repeats at shaft rotation frequency (once per revolution) usually indicates a cross-kit problem, while a click that occurs irregularly often points to the overrunning clutch ratchet engagement. Address the noise source promptly as continued operation with a damaged component accelerates wear dramatically and increases the risk of sudden shaft failure.<\/p>\n
5. PTO Shaft Guard Damage or Breakage
\nA cracked, missing, or non-rotating PTO shaft cover is both a safety compliance failure and a maintenance indicator. The guard should rotate freely on its bearing relative to the inner shaft, and the chain anchor must be securely attached at both ends. A guard that has seized onto the shaft and is rotating with it generates significant friction heat and will wear through the plastic rapidly. Always replace a damaged PTO shaft guard immediately and never operate the discbine with an exposed rotating shaft, as the entanglement risk to operators is severe. Our replacement guard kits are designed to match the exact diameter and length of our CMN agricultural PTO shaft assemblies and include all anchor chains, end caps, and fitting hardware.<\/p>\n
![\"Eixo](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-New-Holland-Disc-Mower-28.webp\")
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Disc Mower PTO Shaft and Disc Mower Gearbox<\/h2>\n
The disc mower PTO shaft is the primary mechanical link between the tractor and the entire disc mower drivetrain. It is responsible for transferring engine torque from the spinning PTO output stub, through the working length of the hitch connection, and into the input gearbox of the disc mower or discbine implement. On the New Holland Discbine series, this shaft must accommodate the unique geometric demands of a machine that can pivot, swivel, and articulate at steep angles during operation and field headland turns, which is why the CAT 6 Constant Velocity design is specified for the main shaft position. The PTO drive shaft for discbine also incorporates safety protection in the form of the FNT34 combination clutch, which shields both the tractor and implement drivetrain from shock loads and overrunning inertia forces. Without a properly functioning tractor PTO drive shaft, no power reaches any part of the disc mower cutting or conditioning system, making it the single most critical mechanical component in the entire implement powertrain from the perspective of operational availability.<\/p>\n
CMN Transmission manufactures and supplies the complete PTO shaft for disc mower range to match every configuration in the Discbine lineup, from the compact 540 RPM side-pull models to the high-output 1000 RPM center-pivot wide-cut machines. Each shaft assembly is designed and tested to deliver the rated HP and torque capacity of the implement without vibration, noise, or premature wear throughout its full service life.<\/p>\n
The disc mower gearbox, also known as the cutterbar gearbox or disc drive gearbox, is the power distribution hub that receives the input torque from the PTO shaft driveline and converts it into the high-speed rotational output needed to drive the individual cutting discs. On the New Holland Discbine MowMax cutterbar system, each cutting disc is driven through its own individually sealed gearbox module with a dedicated oil reservoir, which means there is a series of gearboxes linked in sequence along the cutterbar. Each gearbox module multiplies the input shaft speed from the 540 or 1000 RPM PTO input up to the cutterbar disc operating speed of approximately 3,000 RPM, which is the speed required for clean, high-velocity blade-tip cutting through dense forage crops. The cutterbar gearboxes are connected in series by short lateral shaft segments, creating a continuous mechanical power chain from the primary input at one end of the cutterbar to the final disc gearbox at the opposite end.<\/p>\n
The essential interdependence between the PTO driveline shaft for disc mower and the disc mower gearbox is direct and absolute: the gearbox cannot function without the PTO shaft delivering input power, and the PTO shaft serves no purpose if the gearbox fails to receive and distribute that power correctly. In practice, the two components must be correctly matched in torque capacity and rotational speed to ensure that neither is overloaded relative to the other. When replacing either component, it is best practice to inspect both simultaneously: a worn or failed gearbox is often the root cause of abnormal torque spikes that have already accelerated PTO shaft wear, and vice versa.<\/p>\n
![\"Caixa](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/0_Disc-Mower-Gearbox-1.webp\")
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Por que escolher os eixos de tomada de for\u00e7a (PTO) agr\u00edcolas da CMN Transmission?<\/h2>\n
A CMN Transmission (Coreia) se destaca como uma das principais fornecedoras mundiais de solu\u00e7\u00f5es de transmiss\u00e3o de pot\u00eancia para os setores industrial e agr\u00edcola, com uma linha de produtos que abrange eixos de acionamento de tomada de for\u00e7a (TDF), caixas de engrenagens agr\u00edcolas, cilindros hidr\u00e1ulicos, caixas de engrenagens planet\u00e1rias, caixas de engrenagens helicoidais, engrenagens c\u00f4nicas, rodas dentadas, correntes, cremalheiras, polias, buchas c\u00f4nicas, acoplamentos e muito mais. Com sede em Ansan-si, Gyeonggi-do, Coreia, e uma base de produ\u00e7\u00e3o com mais de 10 f\u00e1bricas cooperativas, mantemos um estoque de mais de 150.000 produtos padr\u00e3o e atendemos clientes em mais de 53 pa\u00edses nas Am\u00e9ricas do Norte, Europa, Am\u00e9rica do Sul, Oriente M\u00e9dio, \u00c1frica, Sudeste Asi\u00e1tico e Oceania.<\/p>\n
What sets CMN Transmission apart in the agricultural PTO shaft market is our commitment to factory-direct pricing without sacrificing quality. As an integrated manufacturing and trading company, we eliminate the multiple dealer markups that inflate the cost of OEM replacement parts. Every tractor PTO shaft we produce is manufactured using advanced CAD design, precision CNC machining, modern heat treatment processes, and rigorous quality testing. Our products carry both ISO 9001 and CE certifications, ensuring compliance with international safety and performance standards.<\/p>\n
Beyond product quality, we offer a level of customer support that large OEM brands often cannot match. Our technical team provides pre-sale consultation to confirm spline configurations, PTO shaft dimensions, and clutch specifications for your exact tractor and implement combination. We offer custom PTO shaft manufacturing for non-standard applications and provide detailed dimensional drawings upon request. Our PTO shaft parts catalog covers the full range from compact 540 PTO shaft configurations to high-output 1000 rpm PTO shaft assemblies, with shear pin PTO shaft, slip clutch PTO shaft, and combination clutch variants all available from stock.<\/p>\n
After the sale, our one-stop after-sales service ensures that replacement components, technical guidance, and warranty support are always accessible. When you choose CMN Transmission, you are choosing a partner committed to keeping your equipment running efficiently, reliably, and safely, season after season. Contact us today for pricing, technical specifications, and delivery information on the PTO shaft for New Holland Discbine models that match your operation.<\/p>\n
![\"Equipamentos](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/03\/Factory-Equipment-3.webp\")
![\"Equipamentos](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/03\/Factory-Equipment-1.webp\")
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Perguntas frequentes<\/h2>\n
Q: What PTO shaft configuration does the New Holland Discbine H7450 require?<\/strong>
\nA: The H7450 is a 1000 RPM center-pivot model requiring 90 PTO horsepower. It uses a 55N Double 80\/50 CV primary main shaft for standard configurations, or a 55N standard shaft when used with the optional swivel hitch tongue. The secondary shaft position uses a 55N standard configuration. There is no intermediate shaft on the H7450. The implement input shaft is typically a 1.375-21 spline. When ordering, confirm whether your machine has the standard drawbar hitch or the optional swivel hitch, as this determines the primary shaft specification. Our technical team can confirm the exact part numbers based on your serial number if needed.<\/p>\nQ: What is the difference between a 540 PTO shaft and a 1000 RPM PTO shaft for disc mowers?<\/strong>
\nA: A 540 PTO shaft is designed for tractors with a 540 RPM PTO output, typically used with implements requiring up to around 65-80 PTO horsepower, such as the H7220, H7230, H7320, and H7330 Discbine models. A 1000 PTO shaft operates at 1000 RPM and handles higher power densities in the same shaft diameter, making it the standard for high-output implements requiring 90-100 HP or more, as used on the H7450 through H7560 series. The spline count and shaft profile differ between 540 and 1000 RPM specifications, so these shafts are not interchangeable. Running a 540-designed shaft at 1000 RPM will cause catastrophic failure due to excessive centrifugal forces on the cross-kits and tubing. Always match the shaft specification to the tractor PTO speed setting in actual use.<\/p>\nQ: Can I use a CMN Transmission shaft as a direct replacement for Weasler PTO shaft on my Discbine?<\/strong>
\nR: Sim. A CMN Transmission fabrica o eixo da tomada de for\u00e7a (TDF) para a New Holland Discbine com dimens\u00f5es equivalentes \u00e0s dos eixos originais da Weasler instalados nos modelos Discbine da s\u00e9rie H. Todos os perfis das estrias do garfo, di\u00e2metros dos furos, dimens\u00f5es do encaixe transversal e comprimentos dos tubos telesc\u00f3picos s\u00e3o fabricados com as mesmas dimens\u00f5es de refer\u00eancia dos eixos de transmiss\u00e3o originais da Weasler. Isso significa que nossos eixos se encaixam diretamente nos suportes e interfaces das travas existentes em sua m\u00e1quina, sem necessidade de adapta\u00e7\u00e3o ou modifica\u00e7\u00e3o. O mesmo princ\u00edpio de encaixe direto se aplica aos eixos originais da Bondioli e da Pavesi. Em caso de d\u00favidas sobre a especifica\u00e7\u00e3o correta para o ano de fabrica\u00e7\u00e3o da sua m\u00e1quina, entre em contato com nossa equipe t\u00e9cnica informando o n\u00famero de s\u00e9rie para confirma\u00e7\u00e3o antes de fazer o pedido.<\/p>\nQ: What is an FNT34 combination clutch and why is it important on the discbine PTO shaft?<\/strong>
\nA: The FNT34 is a specific type of combination clutch that integrates both a friction disc clutch and an overrunning (freewheeling) ratchet clutch in a single compact housing, mounted on the secondary PTO drive shaft for discbine. The friction element limits the peak torque that can be transmitted through the shaft to a calibrated maximum, protecting the cutterbar gearboxes and U-joints from sudden overload impacts caused by rock strikes or foreign object hits. The overrunning element prevents the high rotational inertia stored in the spinning disc cutterbar from back-driving the tractor transmission when the PTO is disengaged or the engine is suddenly unloaded. Both protection mechanisms are critical for reliable, cost-effective operation of the New Holland Discbine, and the FNT34 assembly should be inspected and serviced at the intervals specified in the implement operator manual to maintain correct slip torque calibration.<\/p>\nQ: What spline size does the New Holland Discbine tractor-side PTO stub use?<\/strong>
\nA: The New Holland Discbine range accommodates two common tractor PTO spline sizes: the 1.375-inch diameter 21-spline (also written as 1-3\/8 inch x 21 spline or 1.375-21), which is standard on most tractors in the 65-80 HP class used with H7220, H7230, H7320, and H7330 models; and the 1.750-inch diameter 20-spline (also written as 1-3\/4 inch x 20 spline or 1.750-20), which is used on larger tractors in the 90-100 HP class running the H7450 through H7560. The implement input shaft is most commonly a 1.375-21 spline across all models. If your tractor has an unusual PTO shaft adapter requirement between these standard sizes, CMN Transmission can supply the appropriate adapter coupling as part of the shaft assembly order.<\/p>\nQ: What is a CAT 6 Constant Velocity PTO shaft and why does the Discbine need it?<\/strong>
\nA: Category 6 (CAT 6) refers to the torque and size class of the heavy duty PTO shaft, capable of transmitting up to approximately 3,000 Nm of torque in the primary shaft position. The Constant Velocity (CV) joint design within this shaft uses a double-joint assembly that maintains identical input and output angular velocity regardless of the deflection angle, which is fundamentally different from standard single Cardan joint designs that produce cyclical speed variation at any working angle. The Discbine requires CV technology on the main shaft because the center-pivot and swivel-hitch tongue designs allowthe machine to articulate far beyond the operating angle range of a standard single Cardan shaft. Without a CV joint, running a discbine at extreme tongue angles would generate severe vibration, rapid U-joint wear, and unacceptable noise levels at both 540 and 1000 RPM operating speeds.<\/p>\nQ: How do I know when my disc mower PTO shaft needs to be replaced?<\/strong>
\nA: The key signs that your PTO shaft for disc mower requires replacement or major service include: noticeable vibration or shaking in the machine at normal operating RPM; clicking, knocking, or grinding noise from the shaft area; visible radial play or roughness in the PTO shaft u joint cross-kit when rotated by hand; visible cracking, bending, or denting in the PTO shaft tubing; a slip clutch that no longer holds under normal cutting load (indicating worn friction disc linings); difficulty telescoping the inner and outer shaft profiles; or a seized, cracked, or non-rotating PTO shaft guard. Annual inspection at the start of the cutting season and after any known impact events is recommended. Replacing worn components proactively during the off-season is far less costly than an emergency breakdown mid-harvest.<\/p>\nQ: Can CMN Transmission manufacture custom PTO shaft lengths for non-standard installations?<\/strong>
\nA: Yes. CMN Transmission offers a full custom PTO shaft manufacturing service for applications where standard catalog lengths do not fit the tractor-implement geometry, for modified machines with altered hitch heights, or for non-standard implement input shaft configurations. To order a custom shaft, provide us with the extended length, compressed length, tractor-side spline specification, implement-side yoke interface dimensions, maximum operating angle, required torque rating, and clutch type preference. Our engineering team will calculate the correct telescoping profile overlap, tube diameter, and wall thickness for the application and provide a dimensional drawing for approval before production. Custom PTO shaft dimensions are typically available within 10-15 business days from drawing approval, and we accept custom OEM orders for agricultural equipment manufacturers requiring private-label driveline solutions as well.<\/p>\nQ: What is the difference between Category 5 and Category 6 PTO shaft categories?<\/strong>
\nA: PTO shaft sizes are classified into categories based on torque capacity and outer tube diameter. Category 5 (CAT 5) shafts are rated for approximately 1,800 Nm of continuous torque and use a specific cross-kit and tube profile sized for mid-range power applications, making them appropriate for the secondary and intermediate shaft positions on the Discbine. Category 6 (CAT 6) shafts are larger and rated for approximately 3,000 Nm of continuous torque with a correspondingly larger tube outer diameter and cross-kit size, making them appropriate for the main primary shaft position that must handle the full tractor PTO output in high-HP applications. Using a CAT 5 shaft in a position that requires a CAT 6 will result in shaft failure under normal operating loads. CMN Transmission clearly identifies the correct category for each shaft position in our Discbine-specific product listings.<\/p>\nQ: Does the PTO shaft guard meet CE safety standards and what maintenance does it require?<\/strong>
\nA: Yes. The complete PTO shaft cover supplied with CMN Transmission Discbine drivelines is designed and tested to comply with CE Machinery Directive requirements for rotating shaft guards, including minimum coverage length, radial clearance from the rotating shaft, end cap design, and chain anchor point strength. The guard tube should be inspected visually at each grease service interval for cracks, splits, or brittleness in the plastic, which can develop with age and UV exposure. Confirm that the guard rotates freely on its bearing relative to the shaft (it must not turn with the shaft) and that both anchor chains remain correctly attached. A worn bearing inside the guard end cap that allows the guard to rotate with the shaft must be replaced promptly, as the resulting friction will quickly destroy the guard and expose the rotating driveline.<\/p>\n![\"Eixo](\"https:\/\/korea-transmission.com\/wp-content\/uploads\/2026\/04\/PTO-Shaft-for-New-Holland-Disc-Mower-22.webp\")
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Avalia\u00e7\u00f5es de clientes<\/h2>\n
Marcus Hollingsworth, Gerente Agr\u00edcola, Estados Unidos<\/strong>
\n\u201cJ\u00e1 faz quase sete anos que uso uma H7450 na nossa planta\u00e7\u00e3o de alfafa de 73 hectares em Ohio. O eixo principal original da Weasler finalmente desgastou a junta homocin\u00e9tica depois de quatro temporadas completas de corte. Encomendei a pe\u00e7a de reposi\u00e7\u00e3o CAT 6 da CMN Transmission na ter\u00e7a-feira e a recebi na quinta. O encaixe foi perfeito, a estria 1.750-20 deslizou para dentro sem problemas e travou com firmeza. J\u00e1 usamos mais de 200 horas com o novo eixo em tr\u00eas safras e ele n\u00e3o apresentou nenhum problema. A qualidade da prote\u00e7\u00e3o tamb\u00e9m \u00e9 visivelmente melhor do que a original, sinceramente. Compraria da CMN novamente sem nem pensar duas vezes.\u201d<\/p>\nKlaus Bergmann, Farmer, Germany<\/strong>
\n\u201cOperamos uma H7560 em nossa fazenda na Baviera e precis\u00e1vamos urgentemente de um eixo de substitui\u00e7\u00e3o no meio da temporada de colheita. A CMN Transmission tinha o conjunto completo de eixos dispon\u00edvel em estoque: eixo principal, eixo intermedi\u00e1rio 55N com embreagem e eixo secund\u00e1rio. A entrega para a Alemanha levou apenas quatro dias \u00fateis. A embreagem combinada FNT34 \u00e9 fabricada com absoluta precis\u00e3o e o limite de torque \u00e9 ajustado de forma muito uniforme. Para nossa aplica\u00e7\u00e3o de 100 HP a 1000 RPM, isso \u00e9 exatamente o que precisamos. A rela\u00e7\u00e3o custo-benef\u00edcio \u00e9 claramente melhor do que a alternativa original da concession\u00e1ria.\u201d<\/p>\nThomas Whitaker, Agricultural Contractor, Australia
\n<\/strong> \u201cSou respons\u00e1vel por uma empresa de servi\u00e7os agr\u00edcolas em Victoria, Austr\u00e1lia, que opera duas m\u00e1quinas H7460 em diversas fazendas leiteiras. Quando voc\u00ea precisa agendar cortes consecutivos em diferentes propriedades, n\u00e3o pode se dar ao luxo de ter m\u00e1quinas paradas. A CMN Transmission tem sido minha fornecedora de pe\u00e7as para eixos de tomada de for\u00e7a (TDF) h\u00e1 tr\u00eas anos. Os eixos secund\u00e1rios padr\u00e3o de 55N que encomendei na \u00faltima temporada vieram pr\u00e9-lubrificados, com as dimens\u00f5es perfeitas e a embreagem pr\u00e9-ajustada corretamente, ent\u00e3o pude simplesmente instal\u00e1-los e come\u00e7ar a trabalhar sem precisar fazer nenhum ajuste. Esse tipo de confiabilidade, do tipo 'instale e esque\u00e7a', \u00e9 exatamente o que um prestador de servi\u00e7os agr\u00edcolas precisa. J\u00e1 recomendei a CMN para outros dois prestadores de servi\u00e7os agr\u00edcolas da minha regi\u00e3o e ambos se tornaram clientes fi\u00e9is.\u201d<\/p>\nDavid Hartley, Hay Farmer, Canada
\n<\/strong> \u201cOperamos uma H7230 h\u00e1 10 anos em nossa fazenda de feno misto em Ont\u00e1rio. A m\u00e1quina j\u00e1 teve tr\u00eas eixos de tomada de for\u00e7a diferentes nesse per\u00edodo, incluindo duas unidades Weasler caras da concession\u00e1ria New Holland. Quando o segundo precisou ser substitu\u00eddo, experimentei a CMN Transmission por recomenda\u00e7\u00e3o de um vizinho. O eixo principal CV 55N e o eixo secund\u00e1rio CV duplo H8 chegaram bem embalados e em excelentes condi\u00e7\u00f5es. O eixo principal est\u00e1 agora em sua terceira temporada completa de corte sem nenhum problema. Em termos de custo, estou economizando algo em torno de 35-40% em compara\u00e7\u00e3o com o pre\u00e7o da concession\u00e1ria. A equipe t\u00e9cnica respondeu \u00e0 minha pergunta sobre o dimensionamento da estria no mesmo dia por e-mail, o que eu realmente apreciei.\u201d<\/p>\nJean-Pierre Morin, Farmer, France<\/strong>
\n\u201cNossa opera\u00e7\u00e3o agr\u00edcola em Loiret utiliza um H7330 desde 2017. O eixo de tomada de for\u00e7a original da Bondioli & Pavesi apresentou defeito ap\u00f3s seis safras, e os prazos de entrega do revendedor eram inaceit\u00e1veis \u200b\u200bdurante a alta temporada. A CMN Transmission nos enviou o conjunto de reposi\u00e7\u00e3o padr\u00e3o 55N da Coreia em menos de uma semana. A qualidade de fabrica\u00e7\u00e3o \u00e9 realmente compar\u00e1vel \u00e0 original: as juntas universais giram sem folga e o perfil telesc\u00f3pico desliza perfeitamente. O atendimento ao cliente foi muito profissional; eles falam ingl\u00eas fluentemente e responderam a todas as nossas perguntas t\u00e9cnicas. Um fornecedor confi\u00e1vel que recomendamos aos nossos colegas agricultores.\u201d<\/p>\nJames MacIntyre, Farm Owner, New Zealand<\/strong>
\n\u201cOperamos uma grande planta\u00e7\u00e3o de silagem de azev\u00e9m na Ilha Sul da Nova Zel\u00e2ndia com tr\u00eas unidades Discbine, uma H7450 e duas H7550. Encontrar pe\u00e7as para o eixo da tomada de for\u00e7a costumava ser um pesadelo log\u00edstico, dada a dist\u00e2ncia dos principais fornecedores. A CMN Transmission mudou isso completamente. O sistema de pedidos online \u00e9 claro, o seletor de eixos espec\u00edfico para cada modelo facilitou a especifica\u00e7\u00e3o da configura\u00e7\u00e3o correta de junta homocin\u00e9tica dupla 55N para a H7450, e a remessa chegou a Auckland em seis dias \u00fateis. Todos os tr\u00eas eixos que encomendamos nas \u00faltimas duas safras encaixaram perfeitamente na primeira tentativa, sem necessidade de modifica\u00e7\u00f5es. Produto s\u00f3lido, bom pre\u00e7o e uma velocidade de entrega que realmente respeita o cronograma do agricultor.\u201d<\/p>\nCarlos Eduardo Mendes, Produtor Rural, Brasil<\/strong>
\n\u201cTrabalhamos com uma H7460 no Rio Grande do Sul, colhendo azev\u00e9m e trevo para feno e silagem. Quando o eixo de transmiss\u00e3o quebrou no meio da colheita, entrei em contato com a CMN Transmission com urg\u00eancia. Eles responderam em menos de duas horas com a especifica\u00e7\u00e3o correta para o eixo de 55N com embreagem combinada para o modelo de 1000 RPM. O produto chegou bem embalado e em perfeitas condi\u00e7\u00f5es. A qualidade da usinagem \u00e9 claramente superior \u00e0 do eixo gen\u00e9rico que us\u00e1vamos anteriormente, sem folga nas juntas, e o perfil telesc\u00f3pico se move sem resist\u00eancia. Certamente compraremos novamente e j\u00e1 o recomendamos a outros produtores da regi\u00e3o.\u201d<\/p>\nRichard Pemberton, Farm Manager, United Kingdom
\n<\/strong> \u201cAdministro uma fazenda mista de 200 hectares em Shropshire e usamos uma H7320 h\u00e1 anos em nosso sistema de tomada de for\u00e7a 540. O que mais aprecio na CMN Transmission \u00e9 o conhecimento t\u00e9cnico deles, n\u00e3o apenas os pre\u00e7os. Quando n\u00e3o tinha certeza se precisava do eixo CV de 35N ou do eixo quadrado de 35N para minha posi\u00e7\u00e3o secund\u00e1ria, liguei para eles e falei com algu\u00e9m que realmente conhecia a linha de produtos Discbine em detalhes. Eles me guiaram pelo processo de identifica\u00e7\u00e3o e confirmaram a especifica\u00e7\u00e3o correta em cinco minutos. O eixo chegou em dois dias e foi instalado sem problemas. Essa combina\u00e7\u00e3o de conhecimento do produto e log\u00edstica eficiente \u00e9 o que me faz voltar sempre. Desde ent\u00e3o, encomendei o conjunto da embreagem deslizante separadamente como pe\u00e7a de reposi\u00e7\u00e3o para manuten\u00e7\u00e3o.\u201d<\/p>\nAlejandro Ruiz, Owner, Argentina<\/strong>
\n\u201cTemos um trator H7230 em nossa empresa de servi\u00e7os agr\u00edcolas na prov\u00edncia de Buenos Aires, usado principalmente para o corte de alfafa e pastagens melhoradas. O eixo da tomada de for\u00e7a original havia se desgastado na junta universal ap\u00f3s cinco temporadas, e os custos na concession\u00e1ria local eram proibitivos. A CMN Transmission ofereceu o eixo CV 55N exato como substituto por \u00a340% a menos que o pre\u00e7o da pe\u00e7a original. A entrega chegou a Buenos Aires em oito dias \u00fateis, tudo correto e sem danos \u00e0 embalagem. O encaixe foi perfeito, sem necessidade de adaptadores. J\u00e1 estamos completando duas temporadas de corte sem nenhum problema. A equipe de atendimento ao cliente \u00e9 muito clara e prestativa nas comunica\u00e7\u00f5es por e-mail.\u201d<\/p>","protected":false},"excerpt":{"rendered":"CMN Transmission manufactures high-quality PTO shafts for New Holland Discbine models H7220, H7230, H7320, H7330, H7450, H7460, H7550, and H7560 disc mower-conditioners. Each disc mower PTO shaft is engineered as a direct replacement for the original Weasler or Bondioli & Pavesi factory-installed units, with no modifications required for installation. Whether you operate a compact 65 HP side-pull H7220 or a heavy-duty 100 HP center-pivot H7560, our agricultural PTO shaft lineup covers the full power range from 540 RPM entry-level models right through to 1000 RPM high-output configurations.<\/p>","protected":false},"featured_media":6981,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[222,262],"product_tag":[232,228,242,234,264,233,226,229,263,265,235,243,225,230,231,224],"class_list":{"0":"post-6998","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-pto-shafts","7":"product_cat-pto-shaft-for-discbine","8":"product_tag-1000-pto-shaft","9":"product_tag-540-pto-shaft","10":"product_tag-agricultural-pto-shaft","11":"product_tag-custom-pto-shaft","12":"product_tag-disc-mower-pto-shaft","13":"product_tag-heavy-duty-pto-shaft","14":"product_tag-pto-drive-shafts","15":"product_tag-pto-driveline-shaft","16":"product_tag-pto-shaft-for-disc-mower","17":"product_tag-pto-shaft-for-discbine","18":"product_tag-pto-shaft-for-tractor","19":"product_tag-pto-shaft-manufacturers","20":"product_tag-pto-shafts","21":"product_tag-pto-shafts-for-sale","22":"product_tag-tractor-pto-drive-shaft","23":"product_tag-tractor-pto-shaft","25":"first","26":"instock","27":"shipping-taxable","28":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/product\/6998","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/comments?post=6998"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/media\/6981"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/media?parent=6998"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/product_brand?post=6998"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/product_cat?post=6998"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/product_tag?post=6998"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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